Compressor



. of Fig. 1. 45

onirico stares EDWARD WILSN, 0F ST. LOUIS,' MESSOUE, SSIIGNR T@ TDLSN COMPANY, 0F ST. LOUIS, MSSOURI, l CEPEATICDK' LTISSQUEL".

conransson.

Application led Hai-ch $5, 1921. Serial Eo. @9,423

To 'HN whom z'l may concern Be it. known that l. EDWARD W'ILSON.. a citizen of the l'nited States. residing at St. Louis. Missouri. have inventeda new and useful Compressor. of which the following is a specification. f

rl`his invention relates to compressors.

An object of the invention is to provide a compact. and highly elicient compressor. including a ycompression chamber with a non-rotative cylinder. and a rocking piston Aoperating in the compression chamber to effect compression. in combination with novel construction and novel elements for main-L proper cooperative relataining the compression chamber orvcliamhers. c A l ario'us other ohJects'otl the invention and advantages obtained therebj.' will appear eccentricalljzf with respect to the anis of said from the following description.` reference being made to the drawings. in which- -Fig. 1 is a view partliv in'section showing man v of the novel features of the invention.

F ig. :2 is a cross sectional view approxiiiiateliy on the line 2 2? of Fig. l.' Y

Fig. 3 is a sectional view on the line 3-4-3 of Fig. 1. 'Y

Fig. l is a sectional view on the line i-l Fig. 5 is :i view showing one out the faces of the device controlling one ot the end walls of the piston chambers.

Figo' is a view showing one of the side VJfaces of one of the end walls of the piston chambers.

Fig. i' is a sectional view showing the passages h v which the compressed air passes from the compression chambers.

'llhe compressor comprising my present invent-ion is a compact and self-contained structure in whicli the operative-mechanism is preferably enclosed within a stationary case which maybe mounted upon a' supporting base. The opera-tive mechanism of the compressor is `driven hy a motor which may be included in the machine as shown. 'l

As shown, the hase l constitutes the sup- )ort for the'coinpressor and the motor :2.

he motor 2, as shown, is mounted on the` base 1 and is arranged to operate the operative mechanism of the compressor hv appropriate connections. desirable form of `connections for operating the compressor from the motor is shown.

In the form shown the connections from the motor to the operating mechanism of the compressor includes a. fly wheel?) enclosed within a part -l of the caseof the machine. The part -l of the machine case is secured to the motor case at one end and to the compressor case proper at the opposite end so :is to obtain the desired rigiditiY of the con` nected parts. cludes a wall 5 having a cylindrical exteni sion 6 supporting anti-friction'hearings i' in which the huh of the tlyovheel 3 is journaled for rotation (Fig. llf The tlv wheel 3 is keyed to anddriven from the motor shaft 8 by a hey 9. and may he held on the shafthv areniovable plate 10 secured to the end-ot the shaft hy a screw holt 11.

wrist pin 12 entends from the wheel 3 wheel. lin the specific forni shown the wrist pin 1:2 is integral with/a plate 13 which mayY he made rigid with the wheel 3 by bolts' l. or otherwise. as desired. rihe wrist pin 12 constitutes a support for an vanti-friction hearing 15 upon which an arm 16 is mountinder is held troni rotation within the hous` ing h v keys i9 which permit arial movement of the cylinder relative to the housing in order to maintain perfect adjustment of. the

'llhe part t# of the case in- .charge of theV parts and to permit the parts tol adjust l end of the piston shaft 21 is journaled for rocking movements in ananti-friction bearing 22 at the outer end of the housing 17,

while the opposite end of said shaft 21 is 'journaled in an anti-friction bearing 23 lmounted in a support 2t in theopposite end 4of the housing 1T. As shown'the shaft 21 is a. greater distance from the plane of the axes of the motor shaftA S and of the wheel 3 than is the wrist pin 12, though the arrangement may be otherwise, if desired.

As shown the interior of the cylinder 18 is divided into two compression chambers bv the sectors 20. The piston comprises secr k'tors integral with the rock shaft 21 arranged to operate within the compression chambers in the cylinder 18.

As shown. air is admitted to the housing 1T vthrough a strainer or screen 26 (Fig. 2) covering an inlet opening 2T. rl`he shaft 21 has a passage 23 arranged to receive the air from the housing and communicating with the compression chambers through passages 29 going through the pistons 25. The means for controlling the admission of air to the compression chambers from the passages 29 ma)v be of an \v desired construction and ai'- rangement. Such controlling means may comprise outwardl)v opening disc valves 29t in the passages 429 for controlling the discompressed air from the compression chambers through the passages 29; and the passages 20a which go through the Sectors 20 for conducting the compressed air from the cylinder ma)v be controlled by in- Wai-dl)v opening disc valves 20".

The walls at the ends of the compression chambers which are in the c vlinder 18 are of novel and improved construction and arrangementin this compressor. The wall at the outer end of said compression chambers comprises a plate 30 which is held in position to close the outer ends of said chambers but which` is capable of lapping and the cylinder l'andagainst adjustment movements against the ends of Y the ends ofthe piston sectors 20 and 25. To permit such plapping and adjustment movements of the plate 30 said plate is formed with a central openingil of larger diameter than the shaft.

21. thus permitting said plate 30 to have rotative and radial movements relative to the other parts. Such rotative .and relative movements ma)v be positively.imparted to the plate 30 by the device which holds saidplate 3 0'in position. The plate 30 is pressed to position against the end of the cylinder axis of the l 30 in position to close theends of the compression chambers. ll'vhen the compressor is operating pressure is admitted into and maintained in the space between the plate 32 and the end of the housing. The passage for admitting the pressure is not shown, but it may be understood as a condition that exists or that is maintained, the' forinof the' passage and the control therefor being details which need not be considered herein.

Thepressnre thus maintained in said space exceeds the mean effective pressure within the compression chambers. Such pressure in said space cooperates with the spring 3-1 to hold the plate 30 close against the end of the cylinder 18' to prevent escape of the .pressure fromI the compression chamber.v butleaves the -plate 30 free for radial and rotative movements so thatthere isa continuous lapping of thebearing surfaces of said plate 30. This keeps the contacting surfaces perfectll,v smooth and prevents the formation of grooves or other irregularities in the contacting .surfaces` thus maintaining a perfect .seal at the ends of the compression cliambers.

The plate 32 is formed with a vcircumferential flange 36 surrounding the plate 30 but leaving said plate free for the movements described. A pin 37 carried by the plate 32 n in the plate 30. The arc of the groove 38 is eccentric relative to the axis of` the shaft 21,. as a result of which the pin 3T, which moves in an arc that is concentric extends into an arcuate 4groove 33 with -the axis of the shaft 21, will impart radialand rocking or rotative movements to the plate 30. Such movements are 'the movements which have been mentioned as lapping movementsof the plate 30 since it is b v such movements that the bearing surfaces of the plate 30 aie lapped and the formation of grooves or other irregularities in4 the contacting surfaces is prevented. and a perfect seal is maintained.

Means is provided for maintaining tle platel 30 in a lubricated condition to minimize frictiii and the wearing of the parts. One such lubricant groove 39 is shown in the shaft 21j: another such lubricant groove 4() is shown in the end of the c vlinder 13: while another lubricant groove -11 is shown in the plate 32: though the specific location and formation of said grooves are im material. The lubricant from said grooves,

' a construction and operation similar to-that of the plate 30 in that said plate 42 is vcapable of radial. and rocking or rotative... .movements relative to the contacting bearing surfaces. Such movements of the plate `42". which for brevity 'may be referred to as-lapping movements. are caused by a pin 43fin a support 44 operating in a groove-45 in the plate 42.v the arrangement ofwhich v groove is similar to the arrangement of the groove 38 in the plate- 30 already' described.

Similar oil grooves at similar or other appropriate-locations relative to the platel 42 as `compared with the oil grooves described j in connection with the plate, V are provided.

Y l`The plate 46 on the opposite side ofthe support 44 from the plate 42 has bearing against the support 24 and is given 'the same 'character of lapping movements that are f given to the plate 30 and Ato the plate 42. 'The lapping movements of the plate 46 are also effected by the pin 43 operating in a groove similar to the grooves 38 and 45. The u se of the plate 46 eliminates need for a stuffing box." v'

From .the foregoingit will be seen that Vthe piston'including the sectors 25 is mount- -edfor rocking movements within the stationary cylinder L8. Such rocking move- 'ments are imparted by the driving connectionsfrom the motor. some of whichjhave already been described including the arm 16 which issupported eccentrically relative to the axis of the wheel 3. An arm 4T is attached to theiend of the shaft 21 and has its end overlapping the end of the arm 16.

The arms 16 and 4T are pivotally kunited by a connection 48 (Fig. 2). s a result of tthis construction :arocking movement is imparted to the shaft 21 by Vthe operationy of the driving Iconnections .including the arm 16. It will be seen that the support.

12 for the arm 16 rotates around the plane of the axis of the shaft 21 and that. as a result of the novel arrangement and cfonstructionshown and described. a rocking.U movement is imparted 'to the lshaft 21 -and thereby to the pistons 25 by such rotary movement ofthe arm 16.

The described or equivalent means for obtaining the results disclosed constitute important features of the present invention. It' is obvious that my invention completely7V accomplishes all of its intended objects and that variations maybe made iii the construction and arrangement of the partswithout departing from the scopeand nature of the invention. I do not restrictmyself to un'- essential features,.nor otherwise, except as set forth in the appended claims.

`What I claim and desire to secure by Letters Patent. is

1. A compressor. comprising a ystationary housing. a non-rotative c vlinder within the housing. a rocking piston within thev cylinder, a shaftl for operating saidf piston. a power driven shaft supported out of alineinent with the piston shaft. a motor for rotating said power driven shaft. and connections from the power driven shaft to the piston shaft whereby thepiston shaft is rocked by the continuous rotation of the power` drivensliaftin one direction.

2'. A compressor. comprising a housing, a

cylinder within the housing. cmpression.

chambers within the cylinder. pistons arranged to operate within said chambers.

passages through the pistons for admitting air into the compression chambers. a rock shaft for rocking said pistons. a rotary motor shaft. nieans for rotating the motor shaft continuously in one direction. and connections opera-ted by the motor shaft for imparting rockingfmovements to said piston shaft.

A compressor. comprising a stationary housing. a non-rotating cylinder within the housing.' compression chambers in said c vl-v inder` end walls for the compression chambers. a piston shaftsupported for rocking movements in said housing, pistons on saidl shaft arranged'to operate within said compression chambers. mechanism for imparting lapping movements to the end walls of the compression chambers as an incident tothe rocking of said shaft. and power mechanism for rocking saidvshaft.

4. compressor, comprising a cylinder. compressionchambers within said cylinder. a piston shaft supported foi` rocking movements. pistons Von said shaft arranged to operate within said chambers. end walls for said chambers. and means operated byv said shaft for imparting lapping movements to said end. walls as an incident to the rocking of said shaft. Y- y 5. compressor. comprising compression LChamb-ers. a piston shaft. pistons arranged to operate within said compression chambers. end walls for the compression chambers. means operated by said shaft for iinparting L)lapping movements to said end walls. a motor. and connections driven b v said 'motor for rocking said shaft.

6. A compressor. comprising a motor. a rotary shaft driven b V said motor. a fly wheel on said shaft.a piston shaft. pistons on said piston shaft. compression chambers within w'hich said .pistons operate. and means driven by .said ily wheel for impart ing rocking movements to said piston shaft 'lbv the continuousfrotation of said fly wheel in one direction.

7. In a compressor. the lcombination with a rocking piston shaft. of a motor, a rotary shaft driven'by said motor, a fly wheel on said shaft rotatedA continuously in one direction by said shaftr and connections from said fly Wheel to said piston shaft for impartingrocking movements to said piston shaft by the continuous rotation of saidI fly wheel in one direction.

, 8. A- compressor, comprising a stationary housing. a non-rotating axially adjustable 'cylinder in said housing, piston chambers in said cylinder.a piston shaft, pistons on said shafty arranged to operate in said chambers, passages through the pistons for admitting air into the piston chambers. and end walls supported by said shaft retaining l saidpistons in proper positionin said piswithv the plane of said piston shaft and out ton chambers.

9. A compressor. comprising a stationary' housing. a non-rotating axially adjustable\ cylinder in said housing. piston chambers Y. in said cylinder. 'a piston shaft. pistons on said shaft arranged to operate in said chambersend yvalls supported by said shaft retaining said pistons in proper position in said piston chan'ibers. and means operated l'iysaid shaft for imparting lappingmovements to said end i'valls.

10. A compressor. comprising a stationary housing. a non-rotating cylinder 'within said housing. chambers in said cylinder. pistons arranged to operate ivithin said chambers. a rock shaft for operating said pistons. a rotary shaft supported parallel of, alinement therewith. and means driven by said rotary 'shaftfor imparting rocking movements to said piston shaft.

11. A compressor., comprising rockingl` pistons. a rock shaft for-operating said pistons. an arm attached to said rocksh'aft. a

rotary shaft. a fly wheel attached to said f lli@ rotaryshaft. and an arm pivotally supported by said fly ivheel and connected with the. arm on the rock shaft for imparting rocking movements to said rock shaft by the continuous rotation of said fly wheel.

1Q. A compressor. comprising a housing. piston chambers within' said housing. pistonslarranged to operate within said chambers. a piston shaft for oscillating said pistons. anti-friction bearings in saidhousing' t supporting said piston shaft. an arm attached to said pistonqshaft. a fly vvheel, meansfor/rotating said fly Wheel. and a connection from said fly ivheel to said armV I, for imparting4 rocklng movements to said piston shaft by the continuous rotation of said fly Wheel in one direction.

A13. In a compressor. the combination with a rocking piston shaft. and an arm attached to said shaft. of a rotary. shaft supported parallel with the plane of said piston shaft,

and connections from said rotary shaft for impartmg rocking movements to sa1d'p1ston `shaftiby the continuous rotation of said rotary shaft in one direction.

14. A compressor, comprising ai cylinder,

within said chambers, end WallsL for said chambers, and means operated by said shaft for imparting lapping movements to Said end Walls. Y

15. A compressor, comprisinga cylinder.

chambers in said cylinder. a piston shaft,-

mechanism for rocking said piston shaft, pistons on said shaft arranged/to operate within said chambers, end walls closing the ends of said chambers. elements holding said end yvalls in position to close the ends of said chambers, and means for imparting lapping movements to said end walls ivhen said shaft is operating. .i

16. A compressor. comprising a stationary housing, a non-rotative axially movable cylinder in 'saidhousing.` chambers in said cylinder. a rock shaft. pistons operated by said rock shaft in said chambers. mechanism i'or rocking said shaft. plates closing the ends of said chambers. elements supported by said rock shaft holding said plates in position to close the ends of said chambers. and means for imparting lapping movement to said plates when said shaft is in operation.

17. compressor, comprising a. stationlary housing, a non-rotative axially .movable cylinder in saidho'using. chambers in said cylinder. -a rock shaft, pistons opferated by' said rock shaft in said chambers, mechanism for rocking said'shaft. plates closing .theA

ends of said chambers. elements supported by said rock shaft holding said plates inposition to close the ends of said chambers',

means forimparting lapping movement to Y said plates whensaid shaft is 'in operation, and lubricant chambers at the bearingsides of said plates. i'

18. A compressor, comprising a base. a housing mounted on -said base. compressor mechanism,` Within said housing, a motor.

mounted on said base. a' fly Wheel driven by said motor. an arm supported by said fly wheel eccentrically of the axis of said ivheel.

and connections from said arm for operating the compressor mechanism.

19. A compressor, comprising 'a base'. compressor mechanism supported b v said base, a7 motor supported by said base. a fly yvheel .rotated by-y said motor. an arm pivoted to said tlv xvheel eccentrically of the axis of said wheel. connections for operating the compressor mechanism from said arm. and construction permitting different. part-s of the compressor mechanism to adjust themselves in accommodation to other parts of thefcompressor mechanism during operatlon thereof.

chambers in'said cylinder, pistons arranged to operate in sai-d chambers, a rock shaft `for operating said pistons, Manti-friction bearings supportingsaid shaft, a motor, a ro,- tary shaft driven by vsaid motor, and connec ions from said rotary shaft for imparting rocking movementsto 'said piston shaftv Aby the continuous rotation of said rotary shaft in one direction.

`21. A compressor, comprising a housing, a cylinder within the.V housing, compression chambers Within the cylinder, pistons ar- 20. A compressor, comprising a cylinder,

ranged to operate Within the compression chambers, passages through the pistons Jfor admitting air into the compression cham- `'compression chambers within the cylinder,

pistons arranged to operate Within said compression chambers, passages through the pistons for admitting air into the compression chambers, machanism for rocking said istons and assa es for conductin air lfrom said compression chambers.

x EDWARD WiLsoN. 

